These were posted on a 375 Ruger thread on 24Hour Big Bores. You may have already seen them but if not here they are. 270 grain Hornady factory

2,789
2,787
2,797
2,780

No question about it, this is a long range plains game gun and will double as a DG cartridge.

The old H&H has met it's match.

H&H will do those speeds with Re 15 and an Oehler A Chrony with the right light will often get higher. But those loads in the 375 would be hotter (I think) that the Hornady factory ammo.

My experiene with 6mm/06 and 6mm/284, a similar shape comparison to the 375 Ruger and H&H is that the 375 Ruger will do better with slower powders than the extra 5% or 6% case capacity increase would indicate.

With spitzer bullet the 4350 burn rates are really too slow for the H&H and the 4064 burn rate is abit fast. One reason why the 375 Wby gets more velocity than the H&H than the increase in cas capacity would suggest.

But I think the real action is yet to come, that is, the 300 and 338 Ruger and maybe a 270 or 7mm Ruger. The 375 Ruger is testing the water. If the 375 Ruger only half flies then the 300 Ruger will sail high.

PS.....Don't know if those Hornady factory speeds were on an Oehler. But they sound OK since a 375 Wby will be right around 2800 with 300 grainers and that would about fit in with the two case capacities

Getting beyond theory and computer programs. Several have tested factory loads and at least Jeff on Gunblast has developed some handloads using various powders and bullets. Not that the 375Ruger needs to shoot a 375 bullet any faster than standard H&H velocities to be effective on game, but, it appears to be living up to the pre-production hype.

GVA

quote:

Not that the 375Ruger needs to shoot a 375 bullet any faster than standard H&H velocities to be effective on game, but, it appears to be living up to the pre-production hype.

It always had me puzzled how so many people thought a larger case capacity would develop lower velocities.

If you load it back to common 375 ballistics of 2450-2500/300gns or 2650/270gns you will have low pressure and plenty of powders to play about with

Has anyone tried any of the lighter bullet offering's? I would like to see how a 235 grain tsx would perform compared to a 338 225 grain load. I am a huge fan of a 338, but I really think that this would be a killer elk rig.

Len Hawkins

quote:

but I really think that this would be a killer elk rig.

quote:

Originally posted by Len Hawkins:
Has anyone tried any of the lighter bullet offering's? I would like to see how a 235 grain tsx would perform compared to a 338 225 grain load. I am a huge fan of a 338, but I really think that this would be a killer elk rig.

Len Hawkins

Check out Jeff Quinn's load data:

http://www.gunblast.com/Ruger-Hawkeye375.htm

I think we are only at the tip of the iceberg with the potential for this cartridge.

GVA

I see that Quinn was shooting in cold weather. He'd probably get about the same velocities that I got at 72 degrees. I think the Hornady ammo is well put together.

The posted speeds were mine, taken from an early generation Chrony that has proven to be highly accurate and at a higher ambient temperature. I shot at 15 feet...

L2S